The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1991
Filed:
Jul. 27, 1990
Hiroshi Matsuoka, Yamato, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
In a heat-insulating structure of a swirl chamber in accordance with the present invention, a cast metal blocks made of a metal material casted into the gap portions in molded articles made of a ceramic fiber-reinforced material are disposed outside swirl chamber blocks made of a ceramic material and forming swirl chambers, and the cast metal blocks are fitted and fixed to a fitting holes of a cylinder head in such a manner as to define air layers. The coefficient of thermal expansion and heat transfer rate of the cast metal blocks can be controlled and heat-resistance can be improved by adding the ceramic fiber-reinforced material to the cast metal blocks. Furthermore, the present invention relates to a production method of a heat-insulating structure of a swirl chamber which imparts easily a residual compressive stress to the swirl chamber blocks using the cast metal blocks.